Note: Price is for one motor Features: As of 8/13, motors are upgraded to Mk4.1 1106 3500kv custom brushless motor 2s-4s rated voltage 16mm, 28.5:1 or 10 all metal planetary gearbox 3mm or 4mm "D" extra long output shaft (can be cut to length) 28.5:1 Drive with 3mm shaft - 22.4g 28.5:1 Drive with 4mm shaft - 23.2g 107:1 HR with 3mm shaft - 27.3g 107:1 HR with 4mm shaft - 28.3g ~28mm body length for Drive ratio ~31mm body length for HR ratio 10.5mm M2 Face mount hole pattern Comes ready for combat, just solder the motor leads to a brushless ESC and you're on your way (Soldering iron required) Find the 3D Model here: https://grabcad.com/library/repeat-mini-mk4-1-1 Improvements vs Mk4 design: New 1106 motor provides 20% more torque Now shorter and lighter! Further changed the wire retention with stronger stator winding wires and mechanical clamping of the wires at the stator base. Disclaimers: These gearboxes can only accept ~2mm of face screw engagement. Using screws that are too long will result in damage.